XANES Analysis of Phthalocyanine Molecular Conductor

Kei Takahashi; Takehisa Konishi; Takashi Fujikawa; Noriaki Hanasaki; Naomi Kawamura; Masaichiro Mizumaki; Masaki Matsuda; Derrick Ethelbhert C. Yu; Toshio Naito; Tamotsu Inabe; Hiroyuki Tajima

doi:10.1380/ejssnt.2012.92

Conference -ISSS-6-

XANES Analysis of Phthalocyanine Molecular Conductor

Kei Takahashi, Takehisa Konishi, Takashi Fujikawa, Noriaki Hanasaki, Naomi Kawamura, Masaichiro Mizumaki, Masaki Matsuda, Derrick Ethelbhert C. Yu, Toshio Naito, Tamotsu Inabe, Hiroyuki Tajima

Author information

Kei Takahashi
Graduate School of Advanced Integration Science, Chiba University, Japan
Takehisa Konishi
Graduate School of Advanced Integration Science, Chiba University, Japan
Takashi Fujikawa
Graduate School of Advanced Integration Science, Chiba University, Japan
Noriaki Hanasaki
Department of Physics, Osaka University, Japan
Naomi Kawamura
Japan Synchrotron Radiation Research Institute, Japan
Masaichiro Mizumaki
Japan Synchrotron Radiation Research Institute, Japan
Masaki Matsuda
Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, Japan
Derrick Ethelbhert C. Yu
Division of Chemistry, Graduate School of Science, Hokkaido University, Japan
Toshio Naito
Division of Chemistry, Graduate School of Science, Hokkaido University, Japan
Tamotsu Inabe
Division of Chemistry, Graduate School of Science, Hokkaido University, Japan
Hiroyuki Tajima
Institute for Solid State Physics, University of Tokyo, Japan

Keywords: X-ray absorption spectroscopy, Electrical transport, NEXAFS

JOURNAL FREE ACCESS

2012 Volume 10 Pages 92-96

DOI https://doi.org/10.1380/ejssnt.2012.92

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Abstract

The dicyano(phthalocyaninato)iron molecular conductor shows the Giant Magnetoresistance (GMR) effect. In order to investigate the effect of the molecular structure and charge on the X-ray absorption in the Fe(Pc)(CN)₂ molecule, we measured the Fe K-edge X-ray Absorption Near Edge Structure (XANES) spectra in the TPP[Fe(Pc)L₂]₂ (L=CN, Br, and Cl), DMDP[Fe(Pc)(CN)₂], and [(n-C₇H₁₅)₄N][Fe(Pc)(CN)₂]. In 7134-7152 eV, we found the clear difference in the XANES spectra between these Fe(Pc)(CN)₂ compounds. Our multiple scattering calculations indicate that the local structure of the iron and CN ligand, which tends to be changed by the nominal charge in the Pc ring, causes the spectral change. [DOI: 10.1380/ejssnt.2012.92]

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